package com.student.filter;

import java.io.IOException;
import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.annotation.WebFilter;
import javax.servlet.annotation.WebInitParam;


@WebFilter(urlPatterns = "/*", initParams = {
		@WebInitParam(name="encoding", value="utf-8"),
		@WebInitParam(name="contentType", value="text/html;charset=utf-8")} )
public class CharacterEncodingFilter implements Filter {
	private String encoding;
	private String contentType;
    public CharacterEncodingFilter() {
    }

	public void destroy() {
	}

	public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {
		response.setContentType(contentType);
		request.setCharacterEncoding(encoding);
		chain.doFilter(request, response);
	}

	public void init(FilterConfig fConfig) throws ServletException {
		encoding = fConfig.getInitParameter("encoding");
		contentType = fConfig.getInitParameter("contentType");
	}

}
